<?
class session_dao($dbObject) {
	
	// 构造函数
	function __construct() {}
	
	// 判断用户是否已经登陆
	function checkSession($admin_id) {
		$sql = "SELECT id, ip, random_key, created_at, admin_id FROM ";
	}

	// 析构函数
	function __destruct() {}
}
?>